Nagoya Racecourse sadly announced that Hikaru Ayahime, who is still active as a racing horse at the age of 19, passed away on November 15, 2023 due to an irregular heart rhythm. Hikaru Ayahime (10.04.2004 – 15.11.2023) is a Japanese filly, and she is the oldest racehorse in Japan to hold a racing record. In some developed countries for horse racing, stallions with excellent results are often used.
Retired at the age of three or four to start breeding, mares have a longer racing career, but often never older than 10 years old. She made her debut on November 25, 2006 at the Tokyo Racecourse's 2-year-old new race, finishing 12th. She didn't achieve any victories after that. It wasn't until 2007 that she moved to Nagoya, where she won her first victory. Although she moved to Oi, she returned to Nagoya in 2009 and has been competing here ever since. Her last victory came at Kasamatsu Racecourse in August 2015. In April this year, after being injured in a Nagoya race, she was unable to play again and has remained at the Nagoya Racecourse to recuperate. 
However, Hikaru Ayahime's competitive career didn't end there. After her victory in August 2015, she continued to compete until April 2023, when she was rested due to an injury in training. However, due to heart failure, she eventually died on November 15 of the same year. Hikaru Ayahime played a total of 317 matches and won 14 times. 
Suspiciously, a 19-year-old female would have been a breeding horse at the breeding farm and retired, but she continued to gallop on the track. 
Comparison table of horse age and human age
It is not difficult to see that the 19-year-old "Hikaru Ayahime" is equivalent to 60 years old in humans, and she still sticks to the field and has not enjoyed retirement benefits until her death.
What do you think about this?